US Bridges

Dupont RD/FAS1273 over Hog Run

Poor

Grundy County, Illinois · SE Sec 30 T33N Range · Structure no. 032430000000000

Built
1975
50 years old
Condition
Poor
inspected October 2024
Type
Channel Beam
Concrete
Length
37 ft
1 main span
Daily traffic
775
2024 count
Owner
County
County Highway Agency

About this bridge

Dupont RD/FAS1273 over Hog Run is a concrete channel beam carrying Dupont RD/FAS1273 over Hog Run in Grundy County, Illinois. It was built in 1975, so it is 50 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 775 vehicles a day, roughly 29% of them trucks, projected to reach 930 by 2046. The structure is 37 ft (11.4 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesDupont RD/FAS1273
CrossesHog Run
LocationSE Sec 30 T33N Range
RouteCounty Highway 0
CountyGrundy County
StateIllinois
Coordinates41.30194, -88.57404
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length37 ft (11.4 m)
Longest span32 ft (9.7 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic775 (2024)
Projected traffic930 by 2046
Trucks29%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Dupont RD/FAS1273 over Hog Run built?

It was built in 1975, making it 50 years old in 2025.

What condition is Dupont RD/FAS1273 over Hog Run in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does Dupont RD/FAS1273 over Hog Run carry?

About 775 vehicles per day (2024 count), of which roughly 29% are trucks.

How long is Dupont RD/FAS1273 over Hog Run?

The structure is 37 ft (11.4 m) long with a longest span of 32 ft (9.7 m) and a deck 26 ft wide.

Who owns Dupont RD/FAS1273 over Hog Run?

It is owned by the County Highway Agency.